Question

Sa se determine ecuatia dreptei care trec prin punctul A(0,3)si B(-4,1)

Answer 1

f(x) = ax + b - Forma generală a unei linii.

$\text{Vrem ca } A \in \text{G}_{f} \implies f(0) = 3 \iff b = 3\\B \in \text{G}_{f} \implies f(-4) = 1 \implies -4a + 3 = 1 \implies a = \frac{1}{2}\\\boxed{f(x) = \frac{x}{2} + 3}$